FIBRE-OPTIC OXYGEN SENSOR WITH THE FLUORESCENCE DECAY TIME AS THE INFORMATION CARRIER
FIBRE-OPTIC OXYGEN SENSOR WITH THE FLUORESCENCE DECAY TIME AS THE INFORMATION CARRIER
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DOI：
10.1016/s0003-2670(00)82310-7
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发表时间：
1988-02-15
影响因子：
6.2
通讯作者：
WOLFBEIS, OS
中科院分区：
文献类型：
--
作者：
LIPPITSCH, ME;PUSTERHOFER, J;WOLFBEIS, OS
与现有的氧荧光器相比，本文描述了一种传感器，它测量指示剂的衰变时间，而不是其发射，而不是其发射强度。描述了一种简单的光电装置，用于测量具有调频LED作为光源的长寿命荧光团的寿命。寿命的测量提供了一个更线性的斯特恩-沃默图，并在传感器的性能方面提供了一定的优势，因为它有一个内部参考系统，这是一个经常使用的两波长参考方法的吸引力。长期稳定性明显更好，因为相移与指示剂漂白和浸出以及灯强度波动无关。检测限为约2 torr的氧气。
In constrast to existing fluoresensors for oxygen, a sensor is described that measures the decay time of the indicator rather than its emission than its emission intensity. A simple opto-electronic device is described for measuring lifetimes of a long-lived fluorophore with a frequency-modulated LED as light source. Measurement of lifetime provides as more linear Stern-Vomer plot and offers certain advantages with respect to the performance of the sensor, because it has an internal reference system that is an attractive to the frequently-used two-wavelenght referencing method. Long-term stability is distinctly better because the phase shift is independent of indicator bleaching and leaching a well as lamp intensity fluctuations. The detection limit is ca. 2 torr of oxygen.